export default defineAppConfig({
  title: 'Hello Nuxt',
  theme: {
    dark: true,
    colors: {
      primary: '#ff0000'
    }
  },
  ui: {
    colors: {
      custom: 'red',
      myCustom: 'orange'
    }
  }
})
/**
<script setup lang="ts">
const appConfig = useAppConfig()

console.log(appConfig.theme)

updateAppConfig(newAppConfig)
</script>
 */
